NetBSD Problem Report #55263
From www@netbsd.org Thu May 14 16:19:29 2020
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for <gnats-bugs@gnats.NetBSD.org>; Thu, 14 May 2020 16:19:29 +0000 (UTC)
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Date: Thu, 14 May 2020 16:19:28 +0000 (UTC)
From: cryintothebluesky@gmail.com
Reply-To: cryintothebluesky@gmail.com
To: gnats-bugs@NetBSD.org
Subject: BeagleBone Black too many interrupts on CPU when using 5V DC power cable
X-Send-Pr-Version: www-1.0
>Number: 55263
>Category: port-evbarm
>Synopsis: BeagleBone Black too many interrupts on CPU when using 5V DC power cable
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: port-evbarm-maintainer
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu May 14 16:20:01 +0000 2020
>Closed-Date: Fri Jun 05 08:23:15 +0000 2020
>Last-Modified: Sun Jun 07 16:40:01 +0000 2020
>Originator: Sad Clouds
>Release: 9.0
>Organization:
>Environment:
>Description:
I see a strange issue with NetBSD-9.0 on BeagleBone Black. When it is powered via USB cable, everything is OK and CPU is normally idle.
But when it is powered via 5V DC cable, about 30-40% of CPU is constantly consumed by interrupts (as reported by top).
Looking at output of "vmstat -iv" the only thing I notice is "irq 64" which is a bit higher (34 vs 7) when powered via 5V DC:
5V DC:
$ vmstat -iv
interrupt total rate
intc (cpu0) irq 98 0 0
intc (cpu0) irq 96 0 0
intc (cpu0) irq 32 0 0
intc (cpu0) irq 62 0 0
intc (cpu0) irq 70 0 0
intc (cpu0) irq 12 1723 10
intc (cpu0) irq 72 1 0
intc (cpu0) irq 30 0 0
intc (cpu0) irq 40 0 0
intc (cpu0) irq 41 1143 6
intc (cpu0) irq 42 884 5
intc (cpu0) irq 43 0 0
intc (cpu0) irq 64 5625 34
intc (cpu0) irq 28 41 0
intc (cpu0) irq 18 2143 12
intc (cpu0) irq 19 1 0
intc (cpu0) irq 69 16324 98
intc (cpu0) irq 3 0 0
Total 27885 169
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback
State-Changed-By: jmcneill@NetBSD.org
State-Changed-When: Wed, 03 Jun 2020 19:18:37 +0000
State-Changed-Why:
Fixed in -current, please test.
From: "Jared D. McNeill" <jmcneill@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/55263 CVS commit: src/sys/arch/arm/ti
Date: Wed, 3 Jun 2020 19:16:23 +0000
Module Name: src
Committed By: jmcneill
Date: Wed Jun 3 19:16:23 UTC 2020
Modified Files:
src/sys/arch/arm/ti: ti_motg.c
Log Message:
PR# port-evbarm/55263: BeagleBone Black too many interrupts on CPU when
using 5V DC power cable
Handle vbus status change events, and don't busy spin in the hard intr
handler when we see a vbus error (this will always be set when VBUS is not
present).
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/sys/arch/arm/ti/ti_motg.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
From: Sad Clouds <cryintothebluesky@gmail.com>
To: gnats-bugs@netbsd.org
Cc: jmcneill@NetBSD.org, port-evbarm-maintainer@netbsd.org,
netbsd-bugs@netbsd.org, gnats-admin@netbsd.org
Subject: Re: port-evbarm/55263 (BeagleBone Black too many interrupts on CPU
when using 5V DC power cable)
Date: Thu, 4 Jun 2020 21:25:55 +0100
I can confirm it looks to be fixed now.
State-Changed-From-To: feedback->closed
State-Changed-By: jmcneill@NetBSD.org
State-Changed-When: Fri, 05 Jun 2020 08:23:15 +0000
State-Changed-Why:
Fixed.
From: "Martin Husemann" <martin@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc:
Subject: PR/55263 CVS commit: [netbsd-9] src/sys/arch/arm/ti
Date: Sun, 7 Jun 2020 16:37:53 +0000
Module Name: src
Committed By: martin
Date: Sun Jun 7 16:37:53 UTC 2020
Modified Files:
src/sys/arch/arm/ti [netbsd-9]: ti_motg.c
Log Message:
Pull up following revision(s) (requested by jmcneill in ticket #945):
sys/arch/arm/ti/ti_motg.c: revision 1.2
PR# port-evbarm/55263: BeagleBone Black too many interrupts on CPU when
using 5V DC power cable
Handle vbus status change events, and don't busy spin in the hard intr
handler when we see a vbus error (this will always be set when VBUS is not
present).
To generate a diff of this commit:
cvs rdiff -u -r1.1.2.2 -r1.1.2.3 src/sys/arch/arm/ti/ti_motg.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.46 2020/01/03 16:35:01 leot Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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